The inside rearview mirror (day-night) uses two photocell sensors to determine light conditions in front and rear of the vehicle. With the inside rearview mirror switched off, the inside rearview mirror is in a clear state. The inside rearview mirror receives its voltage from the HVAC fuse in the fuse block through circuit 41. Ground is supplied through circuit 850 from G302.

With the inside rearview mirror switch on, the backlight of the switch turns on. During bright light conditions, the inside rearview mirror is in a clear state. At night, the inside rearview mirror remains in a clear state until the glare of headlamps from behind increases to a point that exceeds the preset sensitivity of the inside rearview mirror. The inside rearview mirror then gradually becomes darker to absorb the glare. It remains dark until the glare of the headlamps diminish then the mirror returns to a clear state.

B+ is supplied from the R/CMPT REL fuse in the underhood accessory wiring junction block through circuit 840 to the transaxle range switch. When the transaxle gear select lever is in the REVERSE position, voltage is sent through circuit 24 to the inside rearview mirror. If the inside rearview mirror is in the darkened state, this input causes the inside rearview mirror to change to a clear state regardless of any glare. When the transaxle gear select lever is shifted out of REVERSE, the inside rearview mirror returns to normal operation.